function sort_table(n) {
		var table, rows, switching, i, x, y, shouldSwitch, dir, switchcount = 0;
		table = document.getElementById("sortable_table");
		switching = true;
		dir = "desc";
		while (switching) {
			switching = false;
			rows = table.rows;
			for (i = 1; i < (rows.length - 1); i++) {
				shouldSwitch = false;
				x = rows[i].getElementsByTagName("TD")[n];
				y = rows[i + 1].getElementsByTagName("TD")[n];
				if (dir == "asc") {
				if (x.innerHTML.toLowerCase() > y.innerHTML.toLowerCase()) {
					shouldSwitch = true;
					break;
				}
				} else if (dir == "desc") {
				if (x.innerHTML.toLowerCase() < y.innerHTML.toLowerCase()) {
					shouldSwitch = true;
					break;
				}
				}
			}
			if (shouldSwitch) {
				rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
				switching = true;
				switchcount ++;
			} else {
				if (switchcount == 0 && dir == "asc") {
				dir = "desc";
				switching = true;
				}
			}
		}
}

function sort_table2(n) {
	var table, rows, switching, i, x, y, shouldSwitch, dir, switchcount = 0;
	table = document.getElementById("sortable_table");
	switching = true;
	dir = "asc";
	while (switching) {
		switching = false;
		rows = table.rows;
		for (i = 1; i < (rows.length - 1); i++) {
			shouldSwitch = false;
			x = rows[i].getElementsByTagName("TD")[n];
			y = rows[i + 1].getElementsByTagName("TD")[n];
			if (dir == "asc") {
				if (parseInt(x.innerHTML) > parseInt(y.innerHTML)) {
					shouldSwitch = true;
					break;
				}
			} else if (dir == "desc") {
				if (parseInt(x.innerHTML) < parseInt(y.innerHTML)) {
					shouldSwitch = true;
					break;
				}
			}
		}
		if (shouldSwitch) {
			rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
			switching = true;
			switchcount ++;
		} else {
			if (switchcount == 0 && dir == "asc") {
			dir = "desc";
			switching = true;
			}
		}
	}
}